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DOI | 10.1175/JAS-D-20-0094.1 |
Interactive Radiation Accelerates the Intensification of the Midlevel Vortex for Tropical Cyclogenesis | |
Yang, Bolei; Tan, Zhe-Min | |
2020-12-01 | |
发表期刊 | Journal of the Atmospheric Sciences |
出版年 | 2020 |
英文摘要 | Interactive radiation helps accelerate tropical cyclogenesis, but the mechanism is still unclear. Using idealized numerical modeling in the radiative–convective equilibrium framework, it is revealed that interactive radiation can bring forward tropical cyclogenesis by accelerating the development of the midlevel vortex. A strong horizontal longwave radiative warming anomaly in the layer between 6 and 11 km altitudes in the vortex region, caused by large concentration of ice-phased particles at high levels, is critical to the development of the midlevel vortex. This longwave radiative warming anomaly induces more upward water vapor flux (mainly in the nonconvective region) and then results in more latent heating at upper levels and more sublimation and melting cooling at lower levels. This leads to an increase of the vertical diabatic heating gradient, and then the intensification of the midlevel vortex. A stronger upward water vapor flux also produces more condensates at upper levels and further enhances the horizontal longwave radiative warming anomaly in the upper troposphere, constituting a positive feedback, and then accelerates tropical cyclogenesis. |
领域 | 地球科学 ; 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/304277 |
专题 | 地球科学 气候变化 |
推荐引用方式 GB/T 7714 | Yang, Bolei,Tan, Zhe-Min. Interactive Radiation Accelerates the Intensification of the Midlevel Vortex for Tropical Cyclogenesis[J]. Journal of the Atmospheric Sciences,2020. |
APA | Yang, Bolei,&Tan, Zhe-Min.(2020).Interactive Radiation Accelerates the Intensification of the Midlevel Vortex for Tropical Cyclogenesis.Journal of the Atmospheric Sciences. |
MLA | Yang, Bolei,et al."Interactive Radiation Accelerates the Intensification of the Midlevel Vortex for Tropical Cyclogenesis".Journal of the Atmospheric Sciences (2020). |
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